When sticking close to stock.... (and NOT stock eliminator.. :D) meaning cast heads, stock stroke, basically street cars that are N/A, the only cars I really see going in the 10's, mid 10's, are 440's. Watched a Dart with a cast head 440, stock pistons, crank, yadddy yadddy, go 10.50's with 3.55's. Good solid lift cam, single plane and a 850 on top. Sorry, I just don't see a 340 or 360 turning the same numbers with cast heads, stock pistons, and 3.55's. And I love small blocks.